Improvement in saw-sets



lli: NTTEE STATES PATENT QEEIGE.

CHRISTOPHER HEINEN, OF LEAVENWORTH, KANSAS.

IMPROVEMENT IN sAw-SETs.

Specification forming part of Letters Patent No. 186,250, dated January 16, 1877 application filed December 18, 1876.

To all whom it 'may 'concern Be it known that I, CHRISTOPHER HEINEN, of Leavenworth, in the county of Leavenworth and State of Kansas, have invented a new and useful Improvement in Saw Set and Guide, of which the following is a specification.

Figure l is a side View of my improved machine, partly in section, through the bed-plate and lever. Fig. 2 is a top view of the same, partly in section, through the line w a', Fig. l. Fig. 3 is a detail view ofthe key for securing the upper die in place. Fig. 4. is a detail section taken through the line y y y, Fig. l. Fig. 5 is la detail view of one of the detached clamps.

Similar letters of reference indicate corresponding parts.

The object of this invention is to improve the construction ofthe saw-set for which Letters Patent, No. 180,878, were granted to me August 8, 1876, to enable the upper die to be more firmly held in place, and the saw-plate to be more easilyand accurately guided to the dies, and which shall be simple 'in construction and convenient in use.

The invention consists in the combination of the key with the upperdie, the lever, and the screw; in the combination of the sliding bar, the two bars having hooks formed upon their forward ends, and the adjustable clamps, with the grooved forward en d of the bedplate of the machine, as hereinafter fully described.

A is the base-plate of the machine, upon which are formed two lugs, a', to and between which is pivoted the end of the lever B. C is the lower die, which is inserted in a dove- `tailed groove in the bed-plate A, and which is kept in place bya gage, D. E is the upper die, which is inserted in a dovetailed groove in the lever B, where it is secured in place by a key, F, and screw G. Thev forward end of the key F is beveled, and is inserted beneath the die `Jl, and the screw G passes through the lever B and screws'into the key F.

In a dovetail groove in the forward part of the bed-plate A is placed a sliding bar, H, the end parts of which areinserted in dovetail cross-grooves in the forward parts of the bars I. Upon the forward ends of the bars I are formed hooks J, to hook between the teeth of the saw-plate, and against which the said saw-plate is held by clamps K. The clamps K are formed with a ange to overlap the rea-r edge of the saw-plate, and are secured in place by set-screws lc. ,When the sawplate is so narrow that the clamps K cannot reach and clamp it the detached clamps L are used. The clamps L are made U-shaped, with the opening between the arms wide enough to receive the bars H I and the sawplate, and are secured-in place by setscrews l'. With this construction the saw -plates will be securely and firmly held, and'will be moved squarely across the dies, so that the teeth will be accurately and evenly set. Having thus described my invention, I claim as new and desire to secure by Letters Patentl. The combination of the key F with the upper die E, the lever B,and the screw Gr, substantially as herein shown and described.

2. rIhe combination of the sliding bar H, the two bars I, having hooks J formed upon their forward ends, and the adjustable clamps K 1c', with the grooved forward end of the bed-plate A of the machine, substantially as herein shown and described.

CHRISTOPHER HEIN EN. 

